Removal of NO/sub X/ and SO sub 2 from Flue Gases Using Electron-Beam Irradiation

摘要

The technical and economical feasibility of an electron beam process to remove SO sub 2 and NO/sub x/ from flue gases has been evaluated in a bench-scale process for typical conditions found in utility applications. An analytical model has been developed based on experimental data that will predict NO/sub x/ and SO sub 2 removal rates in the electron beam reaction as a function of dosage, temperature, oxygen concentration, moisture concentration, and initial values of SO sub 2 and NO/sub x/ concentrations. Three electron beam processes have been evaluated against two conventional processes for SO sub 2 and NO/sub x/ removal. All three are competitive for utilities burning high sulfur coal provided high NO/sub x/ removal is required (90% NO/sub x/ removal). In addition, two of the processes are currently lower in cost than a conventional wet Flue Gas Desulfurization (FGD) system without the high NO/sub x/ removal requirement. (ERA citation 07:050124)